干旱区生态环境知识资源中心(Arid): 浑善达克沙地以北地区沙漠化动态初探

Arid

	浑善达克沙地以北地区沙漠化动态初探
其他题名	Dynamic Changes of Sandy Desertification Land in North of Otindag Sandy Land
	马绍休; 王涛; 封建民; 陈广庭; 郭坚
ISSN	1000-288X
出版年	2006
卷号	26 期号:3 页码:46-50
中文摘要	在收集大量前人研究成果和野外调查的基础上,运用RS和GIS技术,以2000年和2005年具有相同时相(秋季)的landsatTM4,3,2波段(分别赋予红、绿、蓝3种颜色)、分辨率为30m*30m的标准假彩色合成卫星影像的两期TM影像为信息源,利用Erdas8.7遥感图像处理软件、Arcinfo9.0和Arcview3.3等GIS软件,对浑善达克沙地以北地区的沙漠化土地进行了动态监测研究和分析.结果表明:土地沙漠化总体呈上升扩展的趋势,5 a多来沙漠化土地面积增加了1 366.057 km2,具体表现为轻度、中度、重度沙漠化土地面积分别增加;239 806,1 025.393,850.396 km2,严重沙漠化面积减少了749.539 km2;从全区各旗、县的角度来看,其中苏尼特右旗、苏尼特左旗、西乌珠穆沁旗、锡林浩特的沙漠化发展比较快,增加的面积分别为:1 038.377,185 487,69.431,51.554 km2,克什克腾旗、阿巴嘎旗的发展速度比较慢,增加的面积分别为:5.492,15.715 km2,林西的沙漠化面积基本没有变化.
英文摘要	Through conducting field investigations and using digital methods of remote sensing and geographical information system techniques, we analyzed the dynamic changes of sandy desertification land of the north of Otindag sandy land based on the TM images of 2000 and 2005. The data adopted in this study were composed of two types, namely, census data of 2000 and 2005 and remote sensing data. The datum source of sandy land and the data in 2005 came from the interpretation of composite Landsat 5 images of bands 4,3 and 2（R, G, B） according to the local conditions and land use status of sandy desertification. In order to minimize possible interpretation errors, a set of interpretation indicators was established based on field investigations. The area measurements of these types were made using the statistics function of GIS. Results indicated that the development and reversion of sandy desertification co-exited in the study area, and the area of sandy desertification land increased by 1 366. 057 from 2000 to 2005. In terms of the extent of sandy desertification, the area of the light sandy desertification increased 239. 806 km^2, the area of the moderate, 1025. 393 km^2, and the area of the severe, 850. 396 km^2. However the very severe sandy desertification decreased 749. 539 km^2. In terms of the administrative region, the areas of sandy desertification land in Sonid Youqi, Sonid Zuoqi, Abga Qi, Xilinhot, Hexigten Qi, Xiujimqin Qi were 1038. 377 km^2, 185. 487 km2, 15. 715 km^2, 51. 554 km^2, 5. 492 km^2, 69. 431 km^2, respectively and area of sandy desertification land in Linxi had not clearly changed. In general, the status of sandy desertification in the North Otindag sandy land is still serious.
中文关键词	浑善达克沙地 ; 沙漠化土地 ; 动态变化 ; 地理信息系统
英文关键词	Otindag sandy land sandy desertification land dynamic change GIS
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ENGINEERING
WOS研究方向	Agriculture
CSCD记录号	CSCD:2444098
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/220123
作者单位	中国科学院, 寒区旱区环境与工程研究所沙漠与沙漠化重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	马绍休,王涛,封建民,等. 浑善达克沙地以北地区沙漠化动态初探[J]. 中国科学院西北生态环境资源研究院,2006,26(3):46-50.
APA	马绍休,王涛,封建民,陈广庭,&郭坚.(2006).浑善达克沙地以北地区沙漠化动态初探.,26(3),46-50.
MLA	马绍休,et al."浑善达克沙地以北地区沙漠化动态初探".26.3(2006):46-50.